Tag: "neutral" at biology news
Researchers find chemosignal that encourages women's sexual desire
... control group with partners who were exposed to a neutral
substance reported an insignificant decrease in sexual desire, while women without partners in the control group experienced a 28 percent decrease in fantasies. The work on sexual desire is reported in the paper "Social Chemosignals from Breastfee...
Acoustics meeting in San Diego
...erence between happiness and anger and sadness and neutral
emotions is better heard in the pronunciation of back vowels, those in which the tongue is positioned towards the back of the mouth (such as the "ah" in father), as opposed to front vowels (such as the "ih" in bit). (1aSC10) MAKING YOUR COMPUTER...
Study in Royal Society journals presents evidence for inherited factors in homosexuality
...e Scandinavian wolf population are consistent with neutral
evolution by Dr JM Seddon and Professor H Ellegren The major histocompatibility complex (MHC) has an integral role in the immune system and the high levels of variability found among its genes may be of particular importance for the health of popula...
OHSU study: Bacterial switching mechanism key to survival
...n diverse and frequently changing conditions. As a neutral
molecule, glucose is able to pass freely in and out of a bacterium cell's membrane. When glucose is available as the energy source, the cell traps the molecule inside its walls by adding a phosphate called "phosphorylation" with the help of a phosp...
Reassuring findings from first study on sperm donor identification
...of the 29 young people involved in the study had a neutral
or positive response to their origins. More than 4 out of 5 said they were likely to ask for the donor's identity and try to contact him, but few saw him as being an important person in their lives and not one reported wanting any money from him. The...
In a tiny squid, bacterial toxin governs organ development
...nes whether or not the relationship is beneficial, neutral
or harmful. Communication between the host and the bacteria that depend on the host, apparently, can be either "civil conversation or a shouting match," depending on the biological context that has developed as the two organisms evolved together. ...
Study in Royal Society journal on possible genetic factors in social responsiblity
...tical assumption is that the sequences evolve in a neutral
fashion, unaffected by natural selection. Here, mitochondrial DNA sequences from tits of the genus Parus were tested for signatures of natural selection. Although there appears to be some selection on these sequences, it is insufficient to alter con...
Where the brain harbors unconscious fears
...sented the volunteers with either fearful faces or neutral
faces as a control. To measure conscious processin...ly presented a fearful face, followed quickly by a neutral
face--a widely used technique called "backward masking." The researchers found that conscious proces...
Jeans too tight? 50 percent of adults can blame their genes and not just diet and exercise
...singly overweight. 'Risk factors' seem to become a neutral
term but they're not at all neutral. They can be a death sentence."...
Study finds direct association between cardiovascular disease and periodontal bacteria
...s, as their role in periodontal disease was either neutral
or has not yet been established. Then, to evaluate their cardiovascular health, the participants received a carotid intima-media thickness (IMT) measurement and provided a blood sample to determine their C-reactive protein levels. C-reactive protei...
Successful test of single molecule switch opens the door to biomolecular electronics
...ule the team tested has three electrical states, a neutral
state where it is an insulator, a second state where electrons are removed to oxidize the molecule and make it a conductor, and a third state where more electrons are removed and turn it back into an insulator. Measuring the connected molecule in a s...
Geography predicts human genetic diversity
...ut the world, accompanied by a progressive loss of neutral
genetic diversity as new areas were colonized. The loss of genetic diversity along colonization routes is smooth, with no obvious genetic discontinuity, thus suggesting that humans cannot be accurately classified in discrete ethnic groups or races on...
Probing the promise and perils of nanoparticles
...ays, such as modifying their surfaces to make them neutral
instead of charged, the scientists found. And, added Banaszak Holl, "not only does engineering make them less harmful, but it also makes them better at what we want them to do. You don't lose anything; it's all a gain." More recently, Leroueil studie...
ORNL, UC Berkeley unravel real-world clues to Earth's mysteries
...d Mine near Redding. A pH level of 7 is considered neutral
and most proteins prefer pH levels between 5 and 7. The water trickling from the mine has a pH of about 0.8 and a temperature of 107 degrees Fahrenheit. "This microbial community is thriving at the extreme edge," said Bob Hettich, a co-author and mem...
PNAS highlights for the week of May 16 - 20
...ger", "kill"), and the other half were emotionally neutral
(e.g., "cousin", "see"). During word presentation,... elicited a more positive electrical response than neutral
words. Differences in electrical activity evoked by threatening versus neutral
words were similar, w...
K-State professor studies how landscape dynamics affect extinction risk for migratory songbirds
...os of dynamic landscape change," With said, "using neutral
landscape models in which breeding habitat was systematically destroyed at various rates." According to With, one concern was that the rate at which habitat was being destroyed might be just as important, if not more so, than the amount of habitat ...
When in danger humans are similar to a deer in the headlights
...fferent categories. They were: pleasant (sports), neutral
(objects), and unpleasant (injured or mutilated hu...asant/mutilation block of pictures compared to the neutral
pictures. The number of heartbeats per minute was also lower after viewing the mutilation pictures ...
Rare chalk grassland takes 50 years to recover from military use
...ampled vegetation and soil. They found that, while neutral
(mesotrophic) grasslands took between 30 and 40 years to re-establish after disturbance during military training, areas of chalk grassland took at least 50 years to recover. The long-lasting damage is due not only to vegetation being destroyed by ta...
Living with salt
...hat don't tolerate salt sport a negative/positive/ neutral
mix. This and other unique structural features may enable the algal carbonic anhydrase to be active in the presence of salt, though not dependent on it. In a surprise twist, the researchers discovered that one other known carbonic anhydrase - found i...
Erotic images, gore cause temporary 'blindness'
... can detect those images with little problem after neutral
images," Zald, assistant professor of psychology a...rget image. An irrelevant, emotionally negative or neutral
picture preceded the target by two to eight items. The closer the negative pictures were to the targ...
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